Canadian border and the Chateaugay Lakes region NY 374 begins at an intersection with
U.S. Route 11 (US 11, named Main Street), where it follows Depot Street The route continues southward out of Chateaugay and back into the local forests and fields, where it passes to the east of High Falls Park. At the intersection with Pulpmill Road, NY 374 continues to the southeast, losing any sight of development around the highway. The route parallels Healey Road and intersects with Number Five Road, where the highway moves around in different directions. The route continues along the
Chateaugay River and into
Brainardsville, where it intersects with
NY 190 (Military Turnpike) and
CR 24 (Brainardsville Road). The route leaves Brainardsville shortly after the intersection with Reynolds Road. NY 374, after leaving the community of Brainardsville, heads southwestward through some local residential developments before an intersection with Davis Road, where it turns to the southeastward. The route continues in this direction, intersecting with the western terminus of Forge Road (
CR 54), NY 374 becomes very undeveloped again before following the shores of
Lower Chateaugay Lake's eastern side. The route follows the short length of the shoreline. At the point where the lake turns into the
Chateaugay Narrows, NY 374 enters the
Adirondack Park and Clinton County. In Clinton County, NY 374 continues along the Narrows, intersecting with Harris Road, which is a dead-end local road. The route continues southward, intersecting with Narrows Road, which crosses over the Narrows and enters a partially developed community. The route continues to the southeast running along the eastern shoreline of
Upper Chateaugay Lake. A short distance later, NY 374 heads to the east, along the shoreline into
Merrill, a small community in the area. The road is moderately developed, until curving to the southeast and away from the shoreline of Upper Chateaugay Lake.
Lyon Mountain to the Plattsburgh arterial After leaving the shorelines of the lakes, NY 374 intersects with Sunset Road, which is a local road heading to the southwest back to the lake. The route continues to the southeast, entering the community of
Lyon Mountain, where it intersects with Bradley Pond Road (
CR 2). The route continues into the moderately developed community, where it intersects with Standish Road (
CR 1). The route here turns eastward, intersecting with local roads before leaving the community of Lyon Mountain and back into the undeveloped rural areas. NY 374 continues through the undeveloped regions of the Adirondack Park and heads along a northeastern pace to an intersection with Chazy Lake Road (
CR 29) on the shores of
Chazy Lake. NY 374, which runs along the northern shoreline of the lake, serves as the northern terminus of Chazy Lake Road. The route continues along the northeastern shoreline and direction along Chazy Lake before turning to the southeast at a bend in the highway. NY 374 continues now on an eastward progression away from the lake becoming developed residentially once again. The route then intersects with Plank Road (
CR 8) and begins a southeastern progression. The route turns to the south, heading along with the deep forests in the Adirondack Park. NY 374 continues southward for a couple of miles along with the forests, making a bend in the curve into the village of
Dannemora. In Dannemora, NY 374 heads eastward, intersecting with Emmonds Street, where it becomes highly developed commercially and residentially. The route progresses eastward, passing a large commercial strip, intersecting with General LeRoy Manor Road (
CR 26), where it leaves Dannemora. After leaving the village of Dannemora, the route heads to the southeast and back into the forests of the Adirondack Park. NY 374 continues eastward, progressing to the north of downtown
Cadyville. The highway turns to the northeast once again, entering Cadyville, where the route approaches an interchange with
NY 3. At this interchange, NY 374 becomes a bypass, remaining a two-lane route with at-grade intersections with local roads, like Rand Hill Road, as it bypasses Cadyville and West Plattsburgh, paralleling NY 3. After West Plattsburgh, NY 3 curves to the southeast to intersect
NY 22B, and NY 374 remains on an eastern track, intersecting NY 190, which intersected back in Brainardsville. Remaining a two-lane arterial, the road parallels other main east–west roads like Tom Miller Road (CR 26), NY 3 (Cornelia Street) and Rugar Street. Just before its final junction with
NY 22, the road widens to a divided four-lane highway in preparation for the nearby junction of
Interstate 87 and curving into one-way streets in the city of
Plattsburgh. ==History==